1-(1-CYANOCYCLOHEXYL)-1-HYDROXY-3-PHENYLUREA

In the crystals of the title compound, C14H17N3O2, there are two molec ules (A and B) in the asymmetric unit. The conformation of the hydroxa mic acid moiety, O=C-N-O, is antiperiplanar for both molecules. The ph enyl substituent is in a synperiplanar conformation, with O=C-N-C tors ion angles of 1.8 (2) and 2.1 (2)degrees for A and B, respectively The corresponding torsion angles of the cyclohexyl substituents are -32.0 (2) and -30.8 (2)degrees, respectively. The cyclohexyl ring adopts a chair conformation in both molecules, with the hydroxamic acid moiety in an equatorial position and the cyano group in an axial position. Th e plane of the phenyl group is twisted with respect to the central ure a plane [38.71 (7) and 43.08 (7)degrees for molecules A and B, respect ively]. No other significant differences in bond lengths, angles or to rsion angles between molecules A and B are observed. The crystal packi ng shows that the A and B molecules are interconnected by hydrogen bon ds, OH . . . O and NH . . . N, in the direction of the a axis.